K. M. WIEGAND, PROFESSOR 



L. knudson. Professor 



J. R. SCHRAMM, PROFESSOR 



DONALD REDD1CK, PROFESSOR 



A. J. EAMES, PROFESSOR 



L. W. SHARP. ASSISTANT PROFESSOR 



O. F. CURTIS, ASSISTANT PROFESSOR 



New York State College of Agriculture 



AT CORNELL UNIVERSITY 



ITHACA, N. Y. 



ALBERT R. MANN, DEAN 



DEPARTMENT OF BOTANY 



April 10, 1923 



Mr. Walter Dearie 

 29 Brewster Street 

 Cambridge, Mass. 



Dear Mr. Dearie: 



In my paper on Bidens published 1899, I made 

 a mistake in the identification of Linnaeus' B ♦ frondosa . 

 My attention was called to this very soon after by Dr. 

 E. D. Greene, who transferred the name to what I called 

 B. melanooarp a and gave the name B. vulgata to what I 

 had called B. frondosa . The names are correctly used 

 in Gray's Manual . B." melanooarpa becomes a synonym of 

 B. frondosa. 



Yours truly, 



w/ii 



